Mythbusters tonight

[Zeek]

Originally Posted by CT_Nismo

Put your Frontier on a dyno and spin it up. Does the truck move forward? A moving conveyor is the same as a dyno.

Well no, as cars are gennerally tied down to a dyno, and I've never had to use a carribeaner for my treadmill. Also a truck isn't the same as a plane. I'm guessing you haven't read any part of this thread. Comparing a car on a dyno or a person on a home tradmill isn't a valid comparison, but I have a way that you could make it one:

1: Put your car on the dyno (without locking it in) and put your car in neutral. (You could put in in park for all I care)
2: Strap a jet engine to it.
3:Call your insurance company and report the car stolen by someone with 'beady eyes and a rocket science for dummies book'.
4: Turn on jet engine and quickly go to full throlttle.
5: Apologize to shop while removing your car from the opposing wall.

The jet engine will push the car right off the dyno, and if you don't agree with that picture it this one last way because it will explain the difference in forces that we're dealing with.

Plane on a treadmill is like space shuttle with rope tied to it, held by Tara Reid. Tara Ried's mission is to pull on that rope to prevent the shuttle from going into space. That is the magnitude of difference in force we're talking about.

Place her directly beneath the main thruster.

It's like my example. If you buy a toy plane and go to a gym, it doesn't matter what speed you put a treadmill on, you can always push the toy plane up the treadmill. Your hand is not interacting with the treadmill and that is exactly the same as the jet engine pushing the plane....except being in a plane with some gigantic hand grabbing it would probably increase alcohol sales in-flight.

[Chris M]

Originally Posted by CT_Nismo

Put your Frontier on a dyno and spin it up. Does the truck move forward? A moving conveyor is the same as a dyno.

Please show me where the driveshaft is located on a jet, and then I'll consider your hypothesis.

[fleaofsc]

Originally Posted by Mainerunr

We all agree that the plane could take off if the treadmill speed equals -plane speed, the details of the real wording have been hashed out. Wheel speed is only relevant here if you're using wheel speed to set the speed fo the treadmill because that will set the speed of the plane relative to air. The plane must still reach liftoff speed to get into the air and, if wheelspeed = treadmill speed, the plane is not moving relative to the air...plane velocity relative to air is the only thing that matters for takeoff.

I'm done with this one. Group A not understanding the subtle difference in details being discussed by group B is not getting anywhere.

Yah, I'm pretty well over it too. I totally understand what you are trying to say and it is 100% correct. No one actually reads other peoples statements on the thread they just repeat the same thing over and over again.

[westexasrepublic]

http://www.youtube.com/watch?v=-EopVDgSPAk&NR=1

see even a 8 yr old gets it. now do yourselves a favor and slap yourself in the face.

http://www.youtube.com/watch?v=siYQU99VaAM

and to answer the stupid friction questions..... he says at the end QUOTE

> "without the piece of tape all I would need to do is provide a SMALL amount of force to overcome the friction of the bearings.

[scuba91ta]

I was about to go buy an rc plane and prove this on my parents treadmill lol

[westexasrepublic]

Originally Posted by YOURADHERE

I think it is one of those questions that seems simple but can be over-analyzed.

^ he said it best.

[kennith]

Originally Posted by CT_Nismo

Put your Frontier on a dyno and spin it up. Does the truck move forward? A moving conveyor is the same as a dyno.

Unstrap the Frontier and put a jet engine in the bed. Then see what happens.

The is a rediculous question. The plane will take off. Period.

Cheers,

Kennith

[BLACKNISSAN06]

this is better than the show muahahahaha

[fleaofsc]

Originally Posted by fleaofsc

Yah, I'm pretty well over it too. I totally understand what you are trying to say and it is 100% correct. No one actually reads other peoples statements on the thread they just repeat the same thing over and over again.

HAHA... Just quoted myself . Anyway, I re-read Mainrunr's post, I thought we were on the same page, but I don't think we really are. I for one know that no matter how fast that dumb conveyor belt is going in any direction the plane is going to take off the same way as it would on the ground. My previous arguments were about the amount of thrust it would take to cancel out friction, and whether or not it could take off if it were going 0 mph relative to the ground, obviously that is not possible.

[mudyfronty05]

Originally Posted by roastbeef

i missed this episode, what did they conclude?

They didn't even do this myth, it was a bunch of myths from the movie Point Break. You didn't miss anything.